The feather experiences 0.075 N of downward force. Assuming it is on earth, what is its mass?

The mass of the feather would be 0.0075 kg.

Explanation:

If the feather were to be on earth, it would have experienced the gravitational pull of the earth downwards. So that from Newton's second law of motion,

F = mg

where f is the force on the object, m is the mass of the object and g is the acceleration due to gravity of the earth.

But, F = 0.075 N, g = 10 m/.

So that,

0.075 = m x 10

m =

   = 0.0075 kg

The mass of the feather would be 0.0075 kg.

not moving. pos accel,